ABSTRACT
INTRODUCTION: The aim of this study was to evaluate the effectiveness of peracetic acid (PAA) in cleaning root canals contaminated with Enterococcus faecalis. METHODS: Sixty first and second mandibular molars were used. Their mesiobuccal canals were prepared with the Reciproc System (VDW, Munich, Germany). The canals were irrigated with 10 mL saline during instrumentation. The teeth were randomly divided into 3 groups (n = 20), according to the irrigation solution to be used after instrumentation: group PAA (5 mL 1% PAA), group EDTA/sodium hypochlorite (NaOCl) (5 mL 17% EDTA followed by 5 mL 2.5% sodium hypochlorite), and group S (5 mL saline). Microbiological samples were collected before instrumentation and after final irrigation. Bacterial quantification was performed by counting the number of colony-forming units (CFUs/mL). The results were analyzed by the nonparametric Wilcoxon and Kruskal-Wallis tests. RESULTS: The 3 groups showed a significant reduction (P < .05) in CFUs/mL after final irrigation. PAA and NaOCl associated with EDTA produced a significantly higher reduction in CFUs/mL (P < .05) compared with saline. There was no statistically significant difference between PAA and EDTA + 2.5% NaOCl (P > .05). CONCLUSIONS: According to the results of the present study, the effectiveness of 1% PAA was similar to that of 17% EDTA + 2.5% NaOCl in cleaning curved root canals contaminated with E. faecalis.
Subject(s)
Dental Pulp Cavity/microbiology , Enterococcus faecalis/drug effects , Peracetic Acid/pharmacology , Root Canal Irrigants/pharmacology , Bacterial Load/drug effects , Edetic Acid/pharmacology , Humans , Materials Testing , Microbial Viability/drug effects , Molar/microbiology , Random Allocation , Root Canal Preparation/instrumentation , Sodium Hypochlorite/pharmacology , Therapeutic Irrigation/instrumentation , Tooth Apex/microbiologyABSTRACT
Este estudo procurou revisar e analisar a literatura pertinente dos últimos anos (1996-2002) que determina a longetividade clínica das restaurações do tipo inlay/onlay de cerâmica e as características que influenciam no sucesso dessas restaurações. Podemos observar que essa técnica restauradora possui um bom índice de sucesso nos trabalhos de curta duração, embora o sucesso em longo prazo ainda não esteja bem estabelecido. Conclui-se que essa técnica ocupa um lugar de destaque na odontologia estética atual e que, com o contínuo desenvolvimento dos materiais cerâmicos, torna-se-á uma alternativa estética e funcional na restauração de dentes posteriores
Subject(s)
Methods , Reference StandardsABSTRACT
Este trabalho tem como objetivo discutir as principais indicações do sistema Procera All Ceram, como também, relatar um caso clínico realizado na clínica de especialização em Dentística Restauradora da Universidade do Estado do Rio de Janeiro (UERJ), onde foram confecionadoas um aponte fixa e duas facetas Procera, que estão sendo acompanhadas pelos autores
